Resurfacing machine for paper making machine suction boxes



July 27,1937. J, A, BORC 2,088,402

RESURFACING MACHIRE FOR PAPER MAKIN G MACHINE SUCTION BOXES Filed Aug.16, 1955 V 2 Sheets-Sheet 1 ATTORINEY July 27, 1937. .1. A. BORCK 2,

RESURFAQING MACHINE FOR PAPER MAKING MACHINE SUCTION BOXES Filed Aug.16, 1955 2 SheetQ-Shee; 2

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I VENTG'R LIUHN KEIQRLK'.

ATTORNEY Patented July 27, 1937 UNETE STATES PATENT or ies RESURFACINGMACHINE FOR PAPER MAK- ING MACHINE SUCTION BOXES Application August 16,1935, Serial No. 36,461

1 Claim.

The present invention relates to a re-surfacing machine for paper makingmachine suction-boxes, or the like. The suction boxes of paper makingmachines are usually provided with a wooden top having perforationstherein, and due to the running of the Fourdrinier paper making wireover these boxes the perforated top becomes rapidly worn and grooved,and as this worn grooved surface is highly injurious to the paper makingWire it is necessary to frequently replace the top or re-surface it. There-surfacing'has usually been done by planing, and this not onlyrequired expertness in order to provide an absolutely flat smooth top,but it has been the practice to return the tops to the makers for thepurpose of re-surfacing as the paper mill was not equipped to properlyre-surface the tops. This was not only inconvenient but expensive andtime consuming. It is proposed in the present invention to provide amachine which may be located at the same plant with the paper makingmachine, and in which the suction boxes may be conveniently placed, themachine being designed to rapidly re-surface the tops and to produce aneven, fiat, and smooth surface. An object of the invention is to providea machine of this character which will be motor driven, which may beadjusted to produce any desired depth of re-surfacing, and which may beoperated without skill on the part of the operator.

With the above and other objects in view, an embodiment of the inventionis shown in the accompanying drawings, and this embodiment will behereinafter more fully described with reference thereto and theinvention will be finally pointed out in the claim.

In the drawings:

Fig. 1 is a side elevation of a machine, according to the exemplaryillustrated embodiment of the invention, the stand for receiving theboxes. and upon which the machine operates being partially broken away.

| Fig. 2 is an end view of the stand.

Fig. 3 is an enlarged end view of the re-surfacing machine mounted upona stand, and showing in dot-and-dash lines the suction box to bere-surfaced.

I Fig. 4 is a plan view of the machine, partially broken away.

Fig. 5 is a side elevation.

Similar reference characters indicate corresponding parts throughout theseveral figures of 1 the drawings.

Referring to the drawings, the re-surfacing machine, according to theexemplary illustrated embodiment of the invention shown therein,comprises an elongated stand consisting of suitable supports orstandards it! supporting a horizontal bed 1 9 upon which the suction boxis adapted to rest, and provided with a pair of parallel channel bars02-42 upon the lower flanges of which there are secured tracks l3l3 uponwhich the re-surfacing machine is adapted to have longitudinal rollingmovement, as will hereinafter more fully appear.

A carrier consisting of an upper horizontal portion i i and downwardlyextending side portions Iii-l5 is provided at the lower corners of saidside portions with flanged rollers 16 which engage the tracks l3l3, sothat the carrier may be rolled longitudinally on the tracks, the flangesof the rollers maintaining the carrier in longitudinal alignment.

Upon the upper side of the carrier there is hingedly mounted a grindingwheel support con- 20 sisting of a transverse portion ll havingdownwardly extending flanges at its longitudinal edges, these flangesbeing hingedly connected to the carrier by means of a transverse shaft19 engaged at its ends with bearing brackets 2U20 25 provided upon therearward end of the carrier, the shaft being secured by nuts 21-2!engaged upon its ends.

The side portions |8l8 extend forwardly beyond the forward edge of thetop portion I1 and 30 upon these forwardly projecting portions there isrotatably mounted the cylindrical grinding or re-surfacing stone 22, theshaft 23 of this stone being journaled at its ends in bearing members245-44 secured to the flanges I8l8 by means 35 of bolts 25. Upon theends of the shaft 23 there are secured pulleys 262i which are engaged bydrive belts 212l extending over pulleys 2828 secured upon the ends ofthe motor'shaft 29, the electric motor 30 being secured upon the 0transverse'portion H by means of bolts 3|.

At the forward end of the top portion M of the carrier there is provideda recess 32 within which the grinding wheel engages, this recess beingformed by bending up a wall portion 33 from 45 the top I t. The diameterof the grinding wheel is such that its grinding surface extends belowthe horizontal portion M of the carrier, while at its upper side itprojects above the hinged support. A guard 34 of arcuate form havingside 50 walls is engaged about the upper portion of the grindingwheel'and is provided at its ends with flanges 35 and 36, which engageupon the upper surface of the forwardly projecting portions of the sideflanges 18-18, and which are secured 55 thereto by means of bolts 31.Upon the forward side of the guard there are provided brackets 3838which support a handle 39, by means of which the machine may belongitudinally moved by the operator.

The handle 39 consists of a brass pipe, the ends of which are threadedand upon which are engaged water jet members $6 and 4'5, the member 46having a hose connection 48. The jets are directed toward the grindingwheel. The water jets cool the wood suction-box tops as they arere-surfaced to prevent burning, and also wash the chips and dust of theground material out of the grinding wheel to keep it cutting freelywithout dragging.

In order to adjust the height of the grinding wheel an adjusting screw40 having a hand wheel M at its upper end is engaged in a threadedbearing member G2 secured by bolts 43 to the upper transverse portionII, the lower end of this screw bearing upon the upper side of thecarrier. It will be seen that by rotating the screw the grinding wheelmay be moved upwardly or downward- 1y about the shaft is, and therebythe depth of the grinding operation to be performed may be gauged. Theweight of the motor as well as the grinding wheel is forwardly of thehinge I9 so that the combined weight of the two is applied to the workduring the surfacing operation.

In operation the suction box 44 is placed upon the horizontal portion llof the stand, its perforated top 45 being then in position to be engagedby the grinding wheel. The grinding wheel is rotated by means of themotor and by moving the carrier back and forth the top is re-surfaced,the depth of the re-surfacting out being determined by the adjustment ofthe height of the grinding wheel.

I have illustrated and described a preferred and satisfactory embodimentof the invention, but it will be obvious that changes may be madetherein, within the spirit and scope thereof as defined in the appendedclaim.

Having thus described my invention what I desire to secure by LettersPatent is:

In a re-surfacing machine for paper making machine suction boxes, alongitudinal bed comprising a pair of spaced parallel tracks and havinga base adapted to support a suction box between said tracks, a carriermounted upon said tracks for longitudinal movement above said box, ahinged supporting member carried by said carrier having bearing portionsat each side, a motor carried by said supporting member at one end, agrinding wheel carried by said supporting member at the other endbetween said bearing portions and adapted to engage the upper surface ofsaid box between said tracks, and drive means between said motor andsaid grinding wheel, the weight of said motor and grinding wheel beingforwardly of the hinge aXis whereby their combined weight is applied tothe work during the surfacing operation, said motor and grinding wheelbeing symmetrically arranged at each side of the longitudinal centralplane of said bed and carrier.

JOHN A. BORCK.

